Nokia Code Warrior Competition

I saw the article on the main page a few days ago about Nokia's "Code Warrior" competition. Does anyone know how the hackathons are supposed to work? Will the app idea list be made available before the event? Are teams allowed, or only individuals?

If the app idea list is published in advance before the hackathons, it would effectively defeat the purpose of having a hackathon, as people will be able to work on their apps beforehand.

I'm thinking about going to the hackathon in Columbus, OH on May 12th, but that may change depending on what is planned for the event.